Pulverized-fuel-burning apparatus



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V. Z. CARACRST PULVERIZED FUEL URNING APPARATUS;

Filed March 25. 1920 fig?.

Patented May e, 1924.

UNITED STATES PATENT OFFICE.

VIRGINIUS Z..CARACRISVTI, F BRONXVILLE, NEW YORK, ASSIGiNOR TO LOCOMOTIVE i PULVERIZED FU'EL'COMPANY, A CORPORATION 0F DELAWARE.

:eULvEaIznn-FUEL-BURNING APrARa'rUs.

.Application filed March 25, 1920. Serial N o. 368,524.

To aN whom. it may concern.'

Be it known that I, VIRGINIUS Z. CARA- cmsri, a citizen ot' the United States, residing at Bronxville. county of Westchester,

and State of New York, have invented certain new and useful Improvements in PulveriZed-Fuel-Burning Apparatus, of which the following is a specification.

-This invention has reference to an imi lo proved apparatus of the character s ecified boiler apparatus referred to which burner is so designed that it! will not only facilitate the vadmiitture of the incomingr fuel and the induced air .which is addedthereto, but will also provide for a whirling and gradually expanding action of the fuel and air as it so passes to the interior of the boiler.

A further object of the invention is the provision of. a burner of the type specified which can be readily drawn back from the boiler to provide convenient access for inspection'or repairs.

The above. as well as such other objects as may hereinafter appear. I obtain by means of a construction which I have illustrated in preferred form in the accompanying drawing,-wherein IFig. 1 is an end View of a. Scotch marine boiler of'the internally fired type having my improvements apphed thereto.

Fig. 2 is a longitudinal sectional View through the boiler showing more especiallyV stack 6 and it will be understood thatany suitable number are provided although two only are shown in the drawing in order to, j avoid confusion. j

Against the outer end of the central corrugated flue or tube 3, I have shown a housing 7, having a refractory lining 8 and provided with a clean-out door 9 which also has air inlet passages therethrough which may be controlled by means of a suitable damper as indicated at 10, the housing 7 also havlng an inclined inlet passage at 11 which lcon,- nects with the burner when the latter is' in operative position as shown in Fig. 2.

The burner is composed of a tubular metal shell 12 which has a refractory lining therein constructed to registerv with the passage 1'1 along a plane 13 which is Iinclined to the vertical as shown. f l

The fuel supply pipe 14 is arranged to open into the burner at one side ofthe center plane thereof as shown in Figs. 1 and 3 and also `in a direction at an angle to the longitudinal axis of the burner passage as a re sult of which the fuel discharged into theA burner will iow'tangentially with respect to the interior surface of the burner and will set up a helical whirling motion and, atthe same time, will ex and as itdescends or progresses towardt e passage 11 b v virtue of the conical or tapered sha eof the inte- -rior of the burner and this wi l facilitate the mixing of the fuel and the induced airwhich enters through the upper endv past the damper 15 which is provided with suitable fastening means 16 whereby to regulate the degree of opening.

The burner is mounted upon rollers 17 carried by tracks 18 supported adjacent to the furnace in position to permit the burner to be rolled away from the passage 11 so as to allow ready inspection of the burner or its parts as well as ot' the interior ofthe casing 7 and tube 3. y

Additional auxiliary air inlets may be arranged on either side of the centenof the burner tube as shown at 19, these being controlled by doors or covers 20 which, as desired, may be set to any degree of opening.

I claim: v 1. A powdered fuel burning apparatus.' having in combination a casing having a chamber tor cooperation with al boiler, a

burner constructed to register with ,the iulet to said chamber, smdburner having its 11.0

- los.

whirling ward the chamber and Ifuel inlet rneansentering the burner at an angle to produce a motioniof the incoming fuel, and means ier inducing additional air to the stream of fuel within the burner.

in a boiler of the Scotch marine type, the combination of structurev to be applied Y* thereto for the adaptation of the boiler to the burning of pulverized fuel, said structure comprising a chamber having an outlet designed to be placed in communication with the inlet opening to a flue of the boiler with its axis substantially' alined with the axis of the flue, sai-dl chamber also having an inlet, a burner discharging into the chamber through said inlet and at. an angle with respectto the axis of the chamber, and va fuel inlet tangentially discharging into the burner and at an angle with respect to 'the axis of the burnerwsaid burner ilarng outwardly from the A*fuel inlet to the chamber.

4. In'a boiler of the Scotch marine type, the combination of structure to be applied thereto for the adaptation of the boiler to the burning of pulverized fuel, said structure comprising a chamber having an outiet designed to be laced in communication with the inlet opening to a flue of the boiler with its axis substantially alined vwith the same axis of the'llue, said chamber also having l an inlet, a burner discharging into the chamber through said inlet and at an angle and an inlet passage arranged to obliquely i discharge the fuel into the ilus, said inlet passage Haring outwardly' inf/'the direction of the iue, and means for/gintroducing fuel under pressure at the erna/ller end of the inlet passage tangentially/'With respect to the wall, of said passager'l 6. In an intern-Illy ired boiler, the coinbination of structure to be applied thereto for the adaptation ofthe boiler/tothe burning of pulverized fuel, said/structure coniprising a chamber having ari/outlet passage designed to be placed vinfcommunication with the inlet opening toa ue of the boiler and an inlet passage arranged to obliquely adischarge the fuel into the due, said inlet passage flaring outwardly in the direction of the flue, and means for introducing fuel under pressure at the smaller end of the inlet rpassage tangeutially with respect to the wall of said passage and at an angle 'with respect to the axis o said passage.

In testimony whereof, have hereunto signed my name.l

rieoniius z. "canacnisri. 

